Custom rear-end parts from Creature Cycles are designed around your frame geometry — not stock castings you file to fit.
You set the numbers in the free Frame Designer, choose the parts you need, and either buy the design files on the shop or enquire for printed 316L stainless. Each design-file order carries your design so we deliver exactly what you ordered.
Lead time: design files are delivered within 5 working days of payment.
1. Choose your parts
Pick what you need for the build (design files):
- Custom chainstay–BB yoke — £58
- Seatstay to toptube / seatpost yoke — £42
- Custom dropouts — Coming soon (not available to buy yet)
Order the BB yoke, the seatstay yoke, or both. Dropouts will join the shop when tooling is ready — they’re listed now so you can see the system.
2. Set your geometry
Open the Frame Designer. Enter chainstay length, BB drop, angles, tube sizes, axle spacing — whatever your layout needs. Add your name and email, then save the design.
You’ll get mitre and jig drawings with the files. That saved design is what we use for your order.
3. Buy design files — or enquire for print
Design files: save your design in Frame Designer and you go straight to a secure payment page for the live parts (BB yoke and seatstay yoke today). We also email you a link to come back and edit your design or pay later — it stays open for 90 days. Each line keeps a link to that design and a short geometry summary, so the job matches the bike you’re building.
Lead time: once you’ve paid, your design files are delivered within 5 working days.
Printed 316L: not on the buy button yet. Use the contact form (or enquire from the product page) with your design and which parts you want printed. We’ll quote lead time, a £25 handling fee, and shipping at cost. A printed rear-end set including dropouts is available on enquiry when you want the metal made as one job — dropouts for print can be quoted even while the design-file dropouts product is still coming soon.
4. Whole rear end, design files
The full design-file rear-end set (BB yoke + seatstay yoke + dropouts at £128) is coming soon — it needs the dropouts product live first. For now, buy the BB yoke (£58) and seatstay yoke (£42) design files; dropouts will unlock the set price when they launch.
What you get
On the shop now: geometry-specific design files for the Frame Designer BB yoke and seatstay yoke. Dropouts design files are coming soon.
On enquiry: printed parts in 316L stainless, including a printed trio / rear-end set when dropouts are ready to print with the yokes. Guide quotes (before handling and shipping): BB yoke £100, seatstay yoke £55, dropout pair £125, printed trio £260 — plus £25 handling; shipping at cost. Titanium and non-standard geometry are quote-only.
The parts are designed to socket onto square-cut straight tubes for TIG welding — no mitres, just a weld round a regular tube circumference. Same system across the rear end, so a full set will work as one clean junction kit rather than three unrelated stock fittings.
Ready?
Questions, print quotes, or early notice when dropouts launch? Use the contact form — we’re in Corris, Mid Wales, and happy to talk through a layout.